以 4- 硝基查耳酮为原料的反应,其产物可获得最高达96%ee值.Up to 96 % ee was achieved with 4 - nitro - chalcone as enone substrate.查耳酮类化合物是合成黄酮类化合物重要的中间体, 具有重要的药理作用.Chalcon is an important intermediate for synthesizing flavone, and has variety of...
芬兰语和瑞典语均为官方语言。Finnish and Swedish are the official languages.语言: 芬兰语和瑞典语均为官方语言.Language: Finnish and Swedish are the official languages.他们能讲芬兰语. 他也能.They can speak Finnish. So can he....
Are cavernous sinus hemangiomas and cavernous malformations different entities?海绵窦血管瘤和海绵状血管畸形是不同的病变 吗 ?Hemangiomas are the most common benign vascular tumors of andand neck region.血管瘤是婴幼儿最常见的先天性良性血管肿瘤,约60%发生于头颈部.Objectiv...
The forces of Cassius were hard pressed early in the battle.在战斗初期,卡修斯的部队处境艰难.Octavian and Mark Antony defeated Brutus and Cassius in 42 BC.屋大维和马克·安东尼在公元前42年战胜布鲁特斯和卡修斯.Brutus and Cassius joined in the conspiracy to kill J...